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factorialsss code in c++ and cyclic redundancy check is exceuted in c++

QPSK的编译 设定噪声为高斯白噪声，对2ASK、2FSK、2PSK、2DPSK等各种调制方式及相应的主要解调方式下（分相干与非相干）的误码率进行统计，并与理论值进行比较，以图形方式表示误码率与信噪比间的关系。(QPSK compiled Set the noise is Gaussian white noise, right 2ASK, 2FSK, 2PSK, 2DPSK variety of modulation and demodulation mode corresponding to the main (sub-coherent and non-coherent) error rate statistics, and with the theoretical value comparison, a graphical representation of bit error rate and SNR relationships.)

ANSYS里的数据导入MATLAB，用于ANSYS与MATLAB交换数据。(The data in ANSYS is imported into MATLAB)

MIMO技术中瑞利衰落信道的MATLAB源程序的仿真(rayleigh fading channel generator)

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基于OFDM无线信道特性建模与仿真,这是一篇很好的解释，OFDM信道模型建立的论文，对于这方面的仿真有很大的参考意义。(OFDM-based wireless channel modeling and simulation, this is a good explanation, OFDM channel model of the paper, the simulation for this great reference value.)

一种大范围高精度的OFDM频偏估计新方法(A New OFDM Frequency estimation method)

说明：  使用python基于numpy编写函数和程序，完整实现了SC-FDE链路的仿真，包括调制、成型滤波、信道、同步、频偏补偿、均衡、解调。(Full realization of SC-FDE link simulation using python with functions based on numpy.)

实现了光通信系统的多径、以及不同信噪比下的通信链路信噪比仿真。其中包含OOK/PPM/DPPM/DHPIM/副载波调制(The simulation of communication link signal-to-noise ratio (SNR) of optical communication system under multipath and different signal-to-noise ratio is realized. It contains OOK/PPM/DPPM/DHPIM/ subcarrier modulation)

信道估计方面的参考，初学者会有很大帮助，基于OFDM系统，有最基本的算法仿真和对比(Channel estimation in terms of reference for beginners will be of great help to the OFDM-based systems, simulation and comparison of the basic algorithm)